Q. Using the extraction of gold the following reactions take placeAu CN- H2O  [X][X] Zn ¾® [Y] AuX and Y are respectively?

Question ID: 23792
  1. [Au(CN)2]- and [ZN(CN)6]4-
  2. [Au(CN)4]2- and [ZN(CN)4]2-
  3. [Au(CN)4]3- and [ZN(CN)4]2-
  4. [Au(CN)2]- and [ZN(CN)4]2-

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